43740344077 has 2 divisors, whose sum is σ = 43740344078. Its totient is φ = 43740344076.

The previous prime is 43740344059. The next prime is 43740344117. The reversal of 43740344077 is 77044304734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29270419396 + 14469924681 = 171086^2 + 120291^2 .

It is a cyclic number.

It is not a de Polignac number, because 43740344077 - 2¹¹ = 43740342029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43740344177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21870172038 + 21870172039.

It is an arithmetic number, because the mean of its divisors is an integer number (21870172039).

Almost surely, 2^43740344077 is an apocalyptic number.

It is an amenable number.

43740344077 is a deficient number, since it is larger than the sum of its proper divisors (1).

43740344077 is an equidigital number, since it uses as much as digits as its factorization.

43740344077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 43.

The spelling of 43740344077 in words is "forty-three billion, seven hundred forty million, three hundred forty-four thousand, seventy-seven".